mirror of
https://github.com/element-hq/element-web
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74 lines
2.9 KiB
TypeScript
74 lines
2.9 KiB
TypeScript
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/*
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Copyright 2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {
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ALPHABET,
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averageBetweenStrings,
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baseToString,
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midPointsBetweenStrings,
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stringToBase,
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} from "../../src/utils/stringOrderField";
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describe("stringOrderField", () => {
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it("stringToBase", () => {
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expect(stringToBase(" ")).toBe(0);
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expect(stringToBase("a")).toBe(65);
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expect(stringToBase("aa")).toBe(6240);
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expect(stringToBase("cat")).toBe(610934);
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expect(stringToBase("doggo")).toBe(5607022724);
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expect(stringToBase(" ")).toEqual(0);
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expect(stringToBase("a", "abcdefghijklmnopqrstuvwxyz")).toEqual(0);
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expect(stringToBase("a")).toEqual(65);
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expect(stringToBase("c", "abcdefghijklmnopqrstuvwxyz")).toEqual(2);
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expect(stringToBase("ab")).toEqual(6241);
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expect(stringToBase("cb", "abcdefghijklmnopqrstuvwxyz")).toEqual(53);
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});
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it("baseToString", () => {
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expect(baseToString(10)).toBe(ALPHABET[10]);
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expect(baseToString(10, "abcdefghijklmnopqrstuvwxyz")).toEqual("k");
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expect(baseToString(6241)).toEqual("ab");
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expect(baseToString(53, "abcdefghijklmnopqrstuvwxyz")).toEqual("cb");
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expect(baseToString(1234)).toBe(",~");
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});
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it("averageBetweenStrings", () => {
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[
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{ a: "a", b: "z", output: `m` },
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{ a: "ba", b: "z", output: `n@` },
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{ a: "z", b: "ba", output: `n@` },
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{ a: "# ", b: "$8888", output: `#[[[[` },
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{ a: "cat", b: "doggo", output: `d9>Cw` },
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{ a: "cat", b: "doggo", output: "cumqh", alphabet: "abcdefghijklmnopqrstuvwxyz" },
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{ a: "aa", b: "zz", output: "mz", alphabet: "abcdefghijklmnopqrstuvwxyz" },
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{ a: "a", b: "z", output: "m", alphabet: "abcdefghijklmnopqrstuvwxyz" },
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{ a: "AA", b: "zz", output: "^." },
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{ a: "A", b: "z", output: "]" },
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].forEach((c) => {
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// assert that the output string falls lexicographically between `a` and `b`
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expect([c.a, c.b, c.output].sort()[1]).toBe(c.output);
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expect(averageBetweenStrings(c.a, c.b, c.alphabet)).toBe(c.output);
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});
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});
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it("midPointsBetweenStrings", () => {
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expect(midPointsBetweenStrings("a", "e", 3)).toStrictEqual(["b", "c", "d"]);
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expect(midPointsBetweenStrings("a", "e", 0)).toStrictEqual([]);
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expect(midPointsBetweenStrings("a", "e", 4)).toStrictEqual([]);
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});
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});
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